BROWSE

Related Scientist

moonjip,park's photo.

moonjip,park
복잡계이론물리연구단
more info

ITEM VIEW & DOWNLOAD

Hosohedral nodal-line superconductivity in hexagonal ABC Dirac semimetals

Cited 0 time in webofscience Cited 0 time in scopus
97 Viewed 0 Downloaded
Title
Hosohedral nodal-line superconductivity in hexagonal ABC Dirac semimetals
Author(s)
Min, Hong-Guk; Lyi, Churlhi; Moon Jip Park; Kim, Youngkuk
Publication Date
2024-01
Journal
Communications Physics, v.7, no.1
Publisher
NATURE PUBLISHING GROUP
Abstract
The recently identified hexagonal non-polar phase of KZnBi, an archetypal topological semimetal, has been found to cohost superconductivity on the surface. We propose that KZnBi can realize an unconventional topological superconductor featuring the hosohedral formation of nodal lines and Bogoliubov Fermi surface emerging under a magnetic field. Our density functional theory (DFT)-based low-energy model shows that the nonsymmorphic band degeneracy of the Dirac bands generically triggers topological nodal line superconductivity fostered by inter-band Coulomb interaction. In particular, the nodal lines of the gap resemble a hexagonal hosohedron with the Schläfli symbol of {2, 6}. Remarkably, the holohedral nodal line superconductor defines the topological phase boundary of the Bogoliubov Fermi surface in the limit where time-reversal symmetry is restored. Our results demonstrate that line nodes readily inflate to the Bogoliubov Fermi surface under an external magnetic field. We provide an experimentally verifiable explanation for the observed superconductivity and suggest a feasible platform for observing topological superconductivity in the hexagonal ABC ternary systems class. © 2024, The Author(s).
URI
https://pr.ibs.re.kr/handle/8788114/15060
DOI
10.1038/s42005-023-01501-9
ISSN
2399-3650
Appears in Collections:
Center for Theoretical Physics of Complex Systems(복잡계 이론물리 연구단) > 1. Journal Papers (저널논문)
Files in This Item:
There are no files associated with this item.

qrcode

  • facebook

    twitter

  • Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.
해당 아이템을 이메일로 공유하기 원하시면 인증을 거치시기 바랍니다.

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse